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TRex Bio, Inc. (TRXB)
NASDAQ: TRXB · Real-Time Price · USD
Healthcare · Biotechnology
13.94+0.13 (+0.93%)
Market cap
$383M
Website
Insider Score
––Not scored
TRXB Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
TRXB Stock Insider Trading Activity
TRXB stock’s insider trading shows 3 purchases for an estimated $3.80M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$3.80M bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Alexandria Venture Investments, LLC Other | Buy | 178,571 | $14.00 | $2.50M | 15.3% | 1,346,501 | Oct 13, 2026 | — | Form 4 |
| SVLSF VI, LLC Other | Converted | 1,574,074 | — | — | 733% | 1,788,943 | Oct 13, 2026 | — | Form 4 |
| SVLSF VI, LLC Other | Converted | 475,411 | — | — | 26.6% | 2,264,354 | Oct 13, 2026 | — | Form 4 |
| MARCUS JOEL S Director | Converted | 41,871 | — | — | New | 41,871 | Oct 13, 2026 | — | Form 4 |
| Alexandria Venture Investments, LLC Other | Converted | 1,167,930 | — | — | New | 1,167,930 | Oct 13, 2026 | — | Form 4 |
| SVLSF VI, LLC Other | Converted | 53,892 | — | — | 733% | 61,248 | Oct 13, 2026 | — | Form 4 |
| SVLSF VI, LLC Other | Converted | 16,277 | — | — | 26.6% | 77,525 | Oct 13, 2026 | — | Form 4 |
| SVLSF VI, LLC Other | Converted | 669,939 | — | — | New | 669,939 | Oct 13, 2026 | — | Form 4 |
| SVLSF VI, LLC Other | Buy | 3,074 | $14.00 | $43.04K | 71.8% | 7,356 | Oct 8, 2026 | — | Form 4 |
| SVLSF VI, LLC Other | Buy | 89,783 | $14.00 | $1.26M | 71.8% | 214,869 | Oct 8, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Buy (P) — Open-market or private purchase
- Converted (C) — Conversion of a derivative security into shares
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.